Differences between editor and engine shader interpretations

[subsoap]

Why is the in editor representation of the shader so much better looking than in engine? This is just a simple shader which make the color be the normal. I would prefer the engine to look like the editor.

_tools.zip

[subsoap]

Better looking method which is more consistent but this might still be worth looking at.

varying mediump vec2 var_texcoord0;
varying mediump vec3 var_position;
varying mediump vec3 var_normal;

void main() {

    gl_FragColor = vec4(normalize(var_normal) * 0.5 + 0.5, 1.0);
}